Pretreatment of Rice Straw by Proton Beam Irradiation for Efficient Enzyme Digestibility
- Authors
- Kim, Sung Bong; Kim, Jun Seok; Lee, Jong Ho; Kang, Seong Woo; Park, Chulhwan; Kim, Seung Wook
- Issue Date
- 8월-2011
- Publisher
- SPRINGER
- Keywords
- Proton beam irradiation; Pretreatment; Rice straw; Saccharification; Biomass
- Citation
- APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, v.164, no.7, pp.1183 - 1191
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
- Volume
- 164
- Number
- 7
- Start Page
- 1183
- End Page
- 1191
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111841
- DOI
- 10.1007/s12010-011-9204-4
- ISSN
- 0273-2289
- Abstract
- Biomass was pretreated with proton beam irradiation (PBI) in order to enhance enzyme digestibility. Rice straw and soaking in aqueous ammonia (SAA)-treated rice straw were treated with 1-25 kGy doses of PBI at a beam energy of 45 MeV. The optimal doses of PBI for efficient sugar recovery were 15 and 3 kGy for rice straw and SAA-treated rice straw, respectively. When PBI was applied to rice straw at 15 kGy, the glucose conversion reached 68% of the theoretical maximum at 72 h. When 3 kGy of PBI was applied to SAA-treated rice straw, approximately 90% of the theoretical glucose conversion was obtained at 12 h compared to a 89% conversion at 48 h. After 2 h of enzymatic saccharification, the initial reaction rates of raw rice straw pretreated with 15 kGy of PBI and SAA-treated rice straw pretreated with 3 kGy of PBI were 1.4 x 10(-4) and 9.7 x 10(-4) g L-1 s(-1), respectively. Further, the results of X-ray diffractometry support the effect of PBI on sugar recovery, whereas scanning electron microscopy images revealed a more rugged rice straw surface.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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